1) Experts say that comets and asteroids could ___.

A. wipe out all animal life, leaving only plants

B. kill a significant proportion of the Earth's human population

C. put an end to all plant and animal life on Earth

D. cause as much damage as the Hiroshima bomb
2) A small asteroid ___.

A. can still cause a lot of damage

B. is not a problem if it is spotted early

C. cannot cause any significant harm

D. is actually more dangerous than a larger one

3) Earth has been relatively safe thanks to ___.

A. pure luck

B. luck and the protective force of another planet from our solar system

C. early warning systems set up by NASA

D. luck and our position in relation to the sun​

Lololo567    1   16.05.2020 13:57    7